Nippon Paint Compnay, Ltd.

San Nopco Limited

Hirofumi Oi

Takashi Nakano

Shigeyuki Sasaki

Tsuyoshi Harakawa

Hideaki Ogawa

A method of forming a multilayer coating film composition comprising applying a water-borne base coating composition to an article to be coated, such as an automotive body, applying a clear coating composition thereon, and curing by heating, wherein the water-borne base coating composition comprises an emulsion resin obtained by emulsion polymerization of an &#x3b1;,&#x3b2;-ethylenically unsaturated monomer mixture having an acid value of 3 to 50 and comprising at least 65% by mass of a (meth)acrylate ester whose ester moiety contains one or two carbon atoms, a coloring component comprising an optically coherent flaky pigment, and an acrylic polymer compound having a weight average molecular weight of 400,000 to 1,500,000 and represented by the general formula (1): 

Method of forming multilayer coating film including water-borne basecoat on automobile substrate

A water-borne base coating composition for automobiles which can give a coating film excellent in luster and in coloration comprises an emulsion resin obtained by emulsion polymerization of an &#x3b1;,&#x3b2;-ethylenically unsaturated monomer mixture having an acid value of 3 to 50 and comprising at least 65% by mass of a (meth)acrylate ester whose ester moiety contains one or two carbon atoms, a coloring component comprising an optically coherent flaky pigment, and an acrylic polymer compound having a weight average molecular weight of 400,000 to 1,500,000 and represented by the general formula (1):

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Kyoto, Japan

Hirofumi Oi